US3301108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanding and contracting mandrel
Assignee: Royal Typewriter Co Inc
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Filing: 1965-03-24
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Granted: 1967-01-31
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Expires: 1985-03-24
Abstract
No abstract record available.
Inventors
- 👤 Edward A Heiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:55
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/40; Y; Y10; Y10T; Y10T279/00; Y10T279/10; Y10T279/1037; Y10T279/1041; Y10T279/1045; Y10T279/17; Y10T279/17666; Y10T279/17692; Y10T279/17717; Y10T82/00; Y10T82/26; Y10T82/266; Y10T82/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN AN EXPANDING MANDREL FOR USE IN SUPPORTING A WORK PIECE, THE COMBINATION COMPRISING: (A) AN ELONGATED BODY HAVING AN AXIAL BORE; (B) A PLURALITY OF OPENINGS EXTENDING RADIALLY OUTWARD FROM SAID AXIAL BORE THROUGH SAID BODY; (C) A BALL IN EACH OPENING; (D) A SHAFT MOUNTED FOR LONGITUDINAL MOVEMENT WITHIN THE AXIAL BORE IN SAID BODY, ONE END OF SAID SHAFT HAVING A CONICAL WEDGING SURFACE;
Claim 2
Dependent Claim
67 words
IN AN EXPANDING MANDREL FOR USE IN SUPPORTING A WORK PIECE, THE COMBINATION COMPRISING: (A) AN ELONGATED BODY HAVING AN AXIAL BORE; (B) A PLURALITY OF OPENINGS EXTENDING RADIALLY OUTWARD FROM SAID AXIAL BORE THROUGH SAID BODY; (C) A BALL IN EACH OPENING; (D) A SHAFT MOUNTED FOR LONGITUDINAL MOVEMENT WITHIN THE AXIAL BORE IN SAID BODY, ONE END OF SAID SHAFT HAVING A CONICAL WEDGING SURFACE;
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |